backbone.js - Cannot read property 'home' of undefined -

i'm new backbone.js , requirejs , i'm trying figure out following situation.

when load app in chrome during "context.onscriptload" initialize function of router called. here i'm using app controller it's still undefined. so, i'm getting error saying:

cannot read property 'home' of undefined 

my router defined as:

define(['jquery', 'underscore', 'backbone', 'components/appcontroller'],      function ($, _, backbone, appcontroller) {          var router = backbone.router.extend({             routes: {                 '': 'home',                 'details/:id': 'details',                 'createagent': 'createagent'             },              initialize: function () {                  var routename;                  (var r in this.routes) {                     routename = this.routes[r];                      this.route(r, routename, $.proxy(appcontroller[routename], appcontroller));                 }             },              start: function () {                 backbone.history.start();             }          });          return new router();     } ); 

it seems appcontroller not initialized.

the controller defined as:

define(['jquery', 'underscore', 'backbone'],     function ($, _, backbone) {         var appcontroller = {             currentview: null,              home: function () {                 var self = this;                 require(['views/homeview'], function (homeview) {                     var view = new homeview();                     self.renderview.call(self, view);                 });             },              details: function (id) {                 var self = this;                 require(['views/detailsview'], function (detailsview) {                     var agent = app.agents.get(id);                      var view = new detailsview({ model: agent });                     self.renderview.call(self, view);                 });             },              createagent: function () {                 var self = this;                  require(['views/createview'], function (createview) {                     var view = new createview();                     self.renderview.call(self, view);                 });             },              renderview: function (view) {                 this.currentview && this.currentview.remove();                  $('#main').html(view.render().el);                 this.currentview = view;             }         }     }); 

my app.js is

requirejs.config({      baseurl: 'scripts/libs',      paths: {         models: '../models',         collections: '../collections',         views: '../views',         routers: '../routers',         components: '../components',         modaldialog: 'backbone.modaldialog'     },      shim: {         'backbone': {             deps: ['underscore', 'jquery'],             exports: 'backbone'         },          'underscore': { exports: '_' }     } })   var app = app || {};  require(['routers/router', 'components/dataservice'], function (router, dataservice) {     $(document).ready(function () {         dataservice.getdata();          router.start();     }); }); 

can explain how resolve issue?

your controller must "return appcontroller;"